A multidimensional synopsis of a stream of textual data pertaining to a particular subject can be generated. To produce the multidimensional synopsis, multiple dimensions that each includes concepts can be identified. The stream of textual data can then be analyzed to identify the occurrence of the concepts within elements of the stream. The multidimensional synopsis can then be produced by generating a score for each intersecting set of concepts from the multiple dimensions. Therefore, each score can generally represent a prevalence of the corresponding intersecting set of concepts within the stream of textual data.